Your hitting your lateral medial delts w/ lateral raises......The degree to which your actually working one more than the other depends on your angle at which your moving and well, your form period! The front raises OTOH, targets your front delts as long as your form is proper. lots of people SS fronts w/ laterals. Or seperate them ifyour lifting heavy.

yup, sngle_chck hit it. as far as doing the exercises, you can do either both arms at the same time, or one at a time. try them both. I usually do mine both arms at once, and single arm once I start to tire, ot I am concentrating.
Also try doing the raises while lying on a 45 degree or so angle. lie facing the bench. I used to do those a lot after my shoulder surgery.

yup, sngle_chck hit it. as far as doing the exercises, you can do either both arms at the same time, or one at a time. try them both. I usually do mine both arms at once, and single arm once I start to tire, ot I am concentrating.
Also try doing the raises while lying on a 45 degree or so angle. lie facing the bench. I used to do those a lot after my shoulder surgery.

I prefer to do dumbell one arm at a time mostly because it eleviates the pressure on my lower back. I also for a switch like to grab 1 heavy dumbell with both hands and raise that.

I havent seen upright rows done since high school....had to think about it for awhile. BAD for the rotator cuffs in shoulders. Good primer for sticking points in the clean and jerk/olympic lifts. Shrugs are best for traps exclusively. Upright rows and heavy weight - be cautious.

I use the shrug as the primary exedrcise for traps and then you can follow up with the uprights for the burn. They have never bothered my shoulders/rotator cuffs but i'm special.